The Corrosion of Welded Joints
of 16GS + 08Kh13 Bimetal, Made of the Specimens Cut
out from a Column after the Long-Term Operation

V. A. Kachanov^a, Yu. B. Danilov^a, T. E. Shepil^a, E. K. Gvozdikova, V. Yu. Kozin^a,
A. I. Kabashnyi^a, S. M. Ivanuna^a, K. A. Yushchenko^b, L. V. Chekotilo^b, and A. V. Bulat^b

^a OAO “UkrNIIkhimmash,” Kharkov (Ukraine)

^b Paton Institute of Electric Welding, Kiev, Ukraine

E-mail: div6@himmash.com.ua

Received August 9, 2006

Abstract—Corrosion–electrochemical investigations into bimetals are conventionally carried out on samples
with the carrying layer preliminarily removed. In this work, the liability of welded joints to HSC without
removal of the carrying layer is investigated, which has considerably enhanced the information content of the
results. A possibility is demonstrated of the application of ANV-70B electrodes and Sv-07Kh25N13 welding
wire, developed at the Paton Electric Welding Institute, in the process of welding in an Ar + O₂ gas mixture for
repairing equipment manufactured from bimetal equipped with a cladding layer of 08Kh13 steel. It is estab-
lished that the preliminary heating of the bimetal up to 350°C in the welding process with the application of
both ANV-70B electrodes and Sv-07Kh25N13 welding wire enhances the resistance of the metal to hydrogen
sulfide corrosion cracking.

DOI: 10.1134/S0033173207070041

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